322 CRYPTOGAMIA— FILICES. Woodsia. 



Masses of capsules roundish, convex, dispersed on the veins 

 at the back o^ihe frond. Cover membranous and shghtly 

 cup-shaped at the base, under each mass ; the margin 

 in many deep, capillary, obscurely jointed, taper-pointed 

 segments, incurved over the capsules^-peYmmieui. Capsules 

 several, stalked, crowded, without any prominent com- 

 mon receptacle^ roundish-obovate, bound by a vertical 

 jointed ring, and bursting (as it seems) irregularly at the 

 sides. Seeds nuxneYous, kidney-shaped. 



A genus of smaliy^r;25, of which two species only have hi- 

 therto been discovered. These have been generally con- 

 founded either with Acrosticlmm or Polypodium, Their 

 roots are fibrous. Fronds tufted, erect, stalked, pinnate, 

 pinnatifid, clothed with simple hairs, or narrow pointed 

 scales. 



The name, given by Mr. Brown, justly commemorates Mr. 

 Joseph Woods, F.L.S., an excellent practical English 

 botanist, who first illustrated our native species of Mosa ,- 

 see vol. 2. 369, and Trans, of the Linn. Soc. v. 12. 173. 



]. WJ i/vensis. Oblong Woodsia. 



Leaflets oblong, deeply pinnatifid, with oblong segments. 



W. ilvensis. Br. Tr. of Linn. Soc. r. 11 . 1 73. 



Acrostichum ilvense. Linn. Sp. PI. erf. 1. 1071. ed.2. 1528. Fl. 



Suec. ed.2.S7\. Fl. Dan. t.39l. Ehrh. Crypt. \9]. 

 Polypodium ilvense. Sw. Syn. Fil. 39. fVillcl. Sp. PL v.d. 198. 



'' Schkuhr Crypt. 16. t. 19." 

 P. Marantse. Hoffm. Germ. v. 2. 5 ; omitting the syn. 

 Lonchitis aspera ilvensis. Dcdech. Hist. 1221./. 

 Filix minor ilvensis, alis asplenii. Moris, sect. 14. t.3.f.22; but 



not the descr. v. 3. 576. n. 22. 

 Nephrodium lanosum. Michaux Boreal.- Amer. v. 2. 270 (not 198). 



On the authority of Mr. Brown. 

 On alpine rocks in Wales and the North of England. 

 Upon Glyder Vawr, near Llyn y Cwm, North Wales. Mr. W. 



Wilson. At the foot of the basaltic rocks, on the Durham side 



of the river Tees, about two hundred yards below Caldron Snout. 



Mr. James Backhouse. Near the summit of some very bold 



basaltic rocks, called Falcon Glints, about ten miles west of 



Middleton, Teesdale. Mr. S. Hailstone. 

 Perennial. July — September. 

 Mr. Wilson first determined this species when he gathered it in 



Wales, in 1824 and 1825 j our English specimens having been 



sent under the name of the following ; a very excusable error. 



